﻿using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Windows.Forms;

namespace OnLineLogFileClient
{
    public static class GloblSett
    {
        public static bool HasAutoRun { get; set; }
        public static bool HasLogInFile { get; set; }
    }

    static class Program
    {
        /// </summary>
        /// <param name="hWnd">窗口句柄</param>
        /// <param name="cmdShow">指定窗口如何显示。查看允许值列表，请查阅ShowWlndow函数的说明部分</param>
        /// <returns>如果函数原来可见，返回值为非零；如果函数原来被隐藏，返回值为零</returns>
        [DllImport("User32.dll")]
        private static extern bool ShowWindowAsync(IntPtr hWnd, int cmdShow);
        /// <summary>
        ///  该函数将创建指定窗口的线程设置到前台，并且激活该窗口。键盘输入转向该窗口，并为用户改各种可视的记号。
        ///  系统给创建前台窗口的线程分配的权限稍高于其他线程。 
        /// </summary>
        /// <param name="hWnd">将被激活并被调入前台的窗口句柄</param>
        /// <returns>如果窗口设入了前台，返回值为非零；如果窗口未被设入前台，返回值为零</returns>
        [DllImport("User32.dll")]
        private static extern bool SetForegroundWindow(IntPtr hWnd);


        private static void HandleRunningInstance(Process instance)
        {
            ShowWindowAsync(instance.MainWindowHandle, 1);  //调用api函数，正常显示窗口
            SetForegroundWindow(instance.MainWindowHandle); //将窗口放置最前端
        }
        private static Process RunningInstance()
        {
            Process current = Process.GetCurrentProcess();
            Process[] processes = Process.GetProcessesByName(current.ProcessName);
            //遍历与当前进程名称相同的进程列表  
            foreach (Process process in processes)
            {
                //如果实例已经存在则忽略当前进程  
                if (process.Id != current.Id)
                {
                    //保证要打开的进程同已经存在的进程来自同一文件路径
                    if (Assembly.GetExecutingAssembly().Location.Replace("/", @"\") == current.MainModule.FileName)
                    {
                        //返回已经存在的进程
                        return process;

                    }
                }
            }
            return null;
        }




        static Dictionary<string, string> dic = new Dictionary<string, string>();

        /// <summary>
        /// 应用程序的主入口点。
        /// </summary>
        [STAThread]
        static void Main(string[] args)
        {

            LogServices.LogService.Instance.Write("221'");
            LogServices.LogService.Instance.Write("221'2222");

            Process process = RunningInstance();
            if (process != null)
            {
                HandleRunningInstance(process);
                return;
            }

            //-ar 是否自动启动传输服务
            //-lf 日志写入文件 
            for (int i = 0; i < args.Length; i++)
            {
                if (args[i].StartsWith("-"))
                {
                    string val = null;
                    if ((i + 1) < args.Length)
                    {
                        val = args[i + 1];
                    }
                    dic.Add(args[i], val);
                }
            }

            string isAutoRun;
            dic.TryGetValue("-ar", out isAutoRun);
            if (isAutoRun == "1")
            {
                GloblSett.HasAutoRun = true;
            }
            string noLog;
            dic.TryGetValue("-lf", out noLog);
            if (noLog == "1")
                GloblSett.HasLogInFile = true;


            AppDomain.CurrentDomain.UnhandledException += CurrentDomain_UnhandledException;
            Application.ThreadException += Application_ThreadException;

            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new OnLineClient());
        }

        static void Application_ThreadException(object sender, System.Threading.ThreadExceptionEventArgs e)
        {
            LogServices.LogService.Instance.Write(e.Exception);
        }

        static void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)
        {
            LogServices.LogService.Instance.Write(e.ExceptionObject);
        }
    }
}
